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To reduce test data volumes, encoded tests and compacted test responses are widely used in industry. Use of test response compaction negatively impacts fault diagnosis since the errors in responses due to defects which are captured in scan cells are not directly observed. We propose a simple and effective way to enhance the diagnostic resolution achievable by production tests with minimal increase...
This paper presents a scalable method to generate close to minimal size test pattern sets for stuck-at faults in scan based circuits. The method creates sets of potentially compatible faults based on necessary assignments. It guides the justification and propagation decisions to create patterns that will accommodate most targeted faults. The technique presented achieves close to minimal test pattern...
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